CHEMISTRY HIGH SCHOOL

1. Science is different than many other ways of thinking because it is based on-opinions
-facts
-personal viewpoints
-none of the above

Answers

Answer 1
Answer:

Answer:

Facts

Explanation:

You can literally read the lesson it tells you science is

all about facts

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A neutron is a particle that carries a negative charge.

Given the balanced equation representing a reaction:2C2H6 + 7O2==>4CO2 + 6H2O

Determine the total number of moles of oxygen that react completely with 8.0 moles of C2H6.

Answers

The number of moles of O₂ will be 28 moles.

The given balanced reaction:

2C_2H_6 + 7O_2==>4CO_2 + 6H_2O

From the above reaction,

2 moles of C₂H₆ nd 7 moles of O₂ reacts together to produce 4 moles of CO₂ and 6 moles of H₂O.

Given:

Number of moles of C₂H₆ = 8

To find:

Number of moles of O₂=?

2 moles of C₂H₆  reacts with 7 moles of O₂.

1 mol of C₂H₆ = (7)/(2) moles of O₂

8 moles of C₂H₆  = (7)/(2) *8 moles of O₂

Thus, number of moles of O₂ will be 28 moles.

Find more information about "Number of moles" here:

brainly.com/question/13314627

Who is regarded as father of modern chemistry ?

Answers

Antoine Lavoisier is considered the father of modern chemistry. He was a French nobleman who recognized and named oxygen and isolated the major components of air.

Lambda=?
c=299,792,458
f=2x10to the 12th Hz
lambda=c/f
how do I solve this?

Answers

\lambda=(c)/(f)\n\nc=299729458(m)/(s)\approx3*10^(8)(m)/(s)\n\nf=2*10^(12)Hz=2*10^(12)(1)/(s)\n\n\lambda=(3*10^(8)(m)/(s))/(2*10^(12)(1)/(s))=1,5*10^(8-12)*(m)/(s)*s=1,5*10^(-4)m

Which scientist developed the quantum mechanical model of the atom?a. Albert Einstein
c. Niels Bohr
b. Erwin Schrodinger
d. Ernest Rutherford

Answers

The quantum mechanical model of the atom was developed by Erwin Schrödinger. The correct option is B

What is Erwin Schrödinger theory?

Austrian physicist Erwin Schrödinger created the quantum mechanical model of the atom in 1926. The development of quantum mechanics, a fundamental physics theory that describes how matter and energy behave at the atomic and subatomic scales, was significantly aided by Schrödinger's work.

The behavior of electrons in atoms was mathematically described by Schrödinger's wave equation, which combined wave-like and particle-like characteristics. His work transformed our understanding of the atomic universe and formed the basis for contemporary quantum theory, along with the contributions of other scientists like Werner Heisenberg and Max Planck.

Learn more about Erwin Schrödinger here : brainly.com/question/1078915

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The answer is Erwin Schrodinger.

if i have 7.7 moles of a gas at a pressure of 0.09 ATM and a temperature of 329 K , what is the volume of the container that the gas is in ?

Answers

n=number of moles=7.7 moles.
P=pressure at atm=0.09 atm
T=temperature at ºK=329 ºK
R=universal gas costant=0.082 (L*atm ) / (ºK*mol)

The ideal gas law:

PV=nRT

therefore:
0.09 atm*V=7.7 moles * 0.082 (L*atn)/(ºK* mol) * 329ºK
V=(7.7 moles * 0.082 (L*atn)/(ºK* mol) * 329ºK) / (0.09 atm)=2,308.12 L

Answer: the volume is  2,308.12 litres

In which type of reaction do two lighter nuclei combine to form one heavier nucleus?(1) combustion (3) nuclear fission
(2) reduction (4) nuclear fusion

Answers

Answer:

Nuclear Fusion

Explanation:

In nuclear fusion two lighter nuclei combine together in order to form one heavier nucleus.

For example, the energy generated from the Sun is made by nuclear fusion: Two hydrogen (H, atomic number 1) nuclei combine in order to form one helium  (He, atomic number 2) nucleus.

Nuclear fission is the opposite reaction, in which one heavier nucleus splits into two lighter nuclei.
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